Bump lodash from 4.17.15 to 4.17.19 in /webapp

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.15 to 4.17.19.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.15...4.17.19

)

Signed-off-by: dependabot[bot] <support@github.com>

This reverts commit c55b2a4a.

Conflicts:
	kwalitee/config.yml
	repos.json